The thing is, brave browser is also doing decentralized ad control to limit invasive ads.
I don't think algebraix is doing ad control to limit invasive ads, but moreso you get rewarded to watch ads and provide info that could be highly valuable to advertisers looking to target their demographic. I think it's a different kind of project as algebraix is really the only one doing this. I think they can benefit a lot from partnering with ad networks and based on their app, they are focusing on high-quality ads.
also a good time to join their airdrop where you download their app and earn 15k tokens. https://algebraix.io/